void setup() {
    Serial.begin(9600);
    int nums[4][5] = { 
        {10, 6, -7, 13, 28}, 
        {10, 5, 44, 8}, 
        {33, 20, 1}, 
        {2, 66, 25, 37, 1} 
    };
    int i;

    Serial.println("Row 2:");
    for (i = 0; i < 5; i++) {
        Serial.print(nums[1][i]);
        Serial.print(" ");
    }
    Serial.println();
    Serial.println("Row 3:");
    for (i = 0; i < 5; i++) {
        Serial.print(nums[2][i]);
        Serial.print(" ");
    }
    Serial.println();
}

void loop() {
    // Do nothing here
}